Gravitational collapse of charged scalar fields
Por:
Torres, JM, Alcubierre, M
Publicada:
1 sep 2014
Categoría:
Physics and Astronomy (miscellaneous)
Resumen:
In order to study the gravitational collapse of charged matter we analyze the simple model of an self-gravitating massless scalar field coupled to the electromagnetic field in spherical symmetry. The evolution equations for the Maxwell–Klein–Gordon sector are derived in the (formula presented) formalism, and coupled to gravity by means of the stress–energy tensor of these fields. To solve consistently the full system we employ a generalized Baumgarte–Shapiro–Shibata–Nakamura formulation of General Relativity that is adapted to spherical symmetry. We consider two sets of initial data that represent a time symmetric spherical thick shell of charged scalar field, and differ by the fact that one set has zero global electrical charge while the other has non-zero global charge. For compact enough initial shells we find that the configuration doesn’t disperse and approaches a final state corresponding to a sub-extremal Reissner–Nördstrom black hole with (formula presented). By increasing the fundamental charge of the scalar field (formula presented) we find that the final black hole tends to become more and more neutral. Our results support the cosmic censorship conjecture for the case of charged matter. © 2014, Springer Science+Business Media New York.
Filiaciones:
Torres, JM:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico
Alcubierre, M:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico
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